third_party/protobuf: Update to HEAD (83d681ee2c)

third_party/protobuf/csharp/buildall.sh

Index: third_party/protobuf/csharp/buildall.sh
diff --git a/third_party/protobuf/csharp/buildall.sh b/third_party/protobuf/csharp/buildall.sh
index 45af705f385782dcdbeafd149cd85359aca4fb6c..cab3222992dd7c0c4e2c0f523ef43b94ead71283 100755
--- a/third_party/protobuf/csharp/buildall.sh
+++ b/third_party/protobuf/csharp/buildall.sh
@@ -1,17 +1,16 @@
 #!/bin/bash
-# Use mono to build solution and run all tests.
 
-# Adjust these to reflect the location of nunit-console in your system.
-NUNIT_CONSOLE=nunit-console
-
-# The rest you can leave intact
 CONFIG=Release
 SRC=$(dirname $0)/src
 
 set -ex
 
-echo Building the solution.
-xbuild /p:Configuration=$CONFIG $SRC/Google.Protobuf.sln
+echo Building relevant projects.
+dotnet build -c $CONFIG $SRC/Google.Protobuf $SRC/Google.Protobuf.Test $SRC/Google.Protobuf.Conformance
 
 echo Running tests.
-$NUNIT_CONSOLE $SRC/Google.Protobuf.Test/bin/$CONFIG/Google.Protobuf.Test.dll
+# Only test netcoreapp1.0, which uses the .NET Core runtime.
+# If we want to test the .NET 4.5 version separately, we could
+# run Mono explicitly. However, we don't have any differences between
+# the .NET 4.5 and netstandard1.0 assemblies.
+dotnet test -c $CONFIG -f netcoreapp1.0 $SRC/Google.Protobuf.Test